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Added isolation levels

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Added SELECT .. FOR UPDATE and SELECT .. IN SHARE MODE
This commit is contained in:
monty@tik.mysql.fi
2001-03-21 01:02:22 +02:00
parent ef75476c67
commit 6f9a73a1ba
22 changed files with 381 additions and 142 deletions
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17
sql/handler.cc
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@@ -59,6 +59,10 @@ const char *ha_row_type[] = {
TYPELIB ha_table_typelib= {array_elements(ha_table_type)-4,"",
ha_table_type+1};
const char *tx_isolation_names[] =
{ "READ-UNCOMMITTED", "READ-COMMITTED", "REPEATABLE-READ", "SERIALIZABLE"};
TYPELIB tx_isolation_typelib= {array_elements(tx_isolation_names),"",
tx_isolation_names};
/* Use other database handler if databasehandler is not incompiled */
@@ -203,6 +207,7 @@ int ha_autocommit_or_rollback(THD *thd, int error)
}
else
(void) ha_rollback_stmt(thd);
thd->tx_isolation=thd->session_tx_isolation;
}
#endif
DBUG_RETURN(error);
@@ -248,6 +253,7 @@ int ha_commit_trans(THD *thd, THD_TRANS* trans)
#endif
if (error && trans == &thd->transaction.all && mysql_bin_log.is_open())
sql_print_error("Error: Got error during commit; Binlog is not up to date!");
thd->tx_isolation=thd->session_tx_isolation;
}
#endif // using transactions
DBUG_RETURN(error);
@@ -286,11 +292,22 @@ int ha_rollback_trans(THD *thd, THD_TRANS *trans)
reinit_io_cache(&thd->transaction.trans_log,
WRITE_CACHE, (my_off_t) 0, 0, 1);
thd->transaction.trans_log.end_of_file= max_binlog_cache_size;
thd->tx_isolation=thd->session_tx_isolation;
}
#endif /* USING_TRANSACTIONS */
DBUG_RETURN(error);
}
void ha_set_spin_retries(uint retries)
{
#ifdef HAVE_GEMINI_DB
if (!gemini_skip)
{
gemini_set_option_long(GEM_OPTID_SPIN_RETRIES, retries);
}
#endif /* HAVE_GEMINI_DB */
}
bool ha_flush_logs()
{